Air-heating apparatus.



F. G. SAYLOR.

AIR HEATING APPARATUS:

APPLICATION FILED SEPT. I. 1911,

Patented Dec. 30, 19M).

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NITED STATES PATENT OFFIQ FRANKLIN G. SAYLOB, OF QUINCY, MASSACHUSETTS, .ASSIGNUB OF ONE-FOURTH TU GEORGE A. LUFKIN, Q13 REVERE, MASSACHUSETTS.

AIR-HEATING APPARATUS.

Application filed September 1, 1917.

To all whom it may concern:

Be it known that I, FRANKLIN G. EiAYLOR, a citizen of the United States, residing at Quincy, county of Norfolk, State of Massachusetts, have invented an Improvement in Air-floating Apparatus, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to air heating apparatus and has for one of its objects to provide an improvement by which the heat in the products of combustion that usually escape through the flue are made use of for heating purposes and for another of its objects to provide a novel construction which involves distributing pipes leading from separate drums into difierent rooms.

My invention is capable of use in con nection with almost any apparatus having a combustion chamber and a smoke flue to take the products of combustion therefrom.

In order to give an understanding of my invention I have illustrated in the drawing a selected embodiment thereof which will now be described, after which the novel features will be pointed out in the appended claims.

The figure of the drawing is a partial sectional view of a hot air furnace having my improvement applied thereto.

It is a fact that in a great many furnaces of different types the products of combustion are delivered to the smoke flue or stack at a high temperature and the heat units thus represented by the escaping products of combustion are wasted. I propose to utilize these heat unit-s by causing them to heat a current of air which may be delivered directly to a room, compartment, or any other space which it is desired to heat.

As stated above, my invention is applicable to furnace constructions of various types, and I will describe one form thereof which might be used in connection with a hot air heater. 7 g

In the drawing I have indicated at 1 a hot air heater which may have any suitable construction. The heater shown comprises a fire-pot 2 which is connected with the smoke flue 3 which leads to the chimney t. The fire-pot is inclosed by the usual sheet metal casing 5, which forms with said firepot an air space 7 in which the air used for Specification of Letters Patent.

Patented Dec. 30, 1919..

Serial No. mazes.

heating the rooms becomes heated. The air is delivered to the space 7 from the usual cold air box 8 and is distributed to the various rooms through the distributing pipes 6.

The parts thus far described are or may be all as is usual in hot air heaters.

In accordance with my invention I place in the smoke line 3 a heating drum 9, which is arranged to have air pass therethrough. This heating drum 9 is shown as connecting to an intake pipe 10 through which fresh cold air may be delivered to the drum, and said drum is also connected to a distributing pipe 11, through which the air that is heated in the drum may be delivered to any room or compartment of the building.

The heating drum will be so constructed relative to the smoke flue to leave a space 12 between the drum and the wall of the flue through which the hot products of combustion may pass thus heating the air in the drum. The drum is also shown as having a flue 13 extending therethrough and through which the products of combustion may pass.

The intake pipe 10 is herein shown as be ing connected to the cold air box 8, but it may take its fresh air from any suitable place. The smoke flue is provided with a damper situated beyond the drum 9 so that the drum is located between the damper and the combustion chamber. The advantage of this construction is that by closing the damper more or less the heat can be retained in the flue, thus making the device more economical than if the heat from the flue could readily pass to the stack.

In order to provide a drum of a larger size that can be used in the usual smoke flue, I propose to make the flue with an enlarged portion 14 in which the drum is received and to make the drum of ellipsoidal shape. 15 and 16 indicate dampers controlling the inlet and discharge pipes 10 and 11 respectively.

The presence of the drum 9 in the smoke fiue does not interfere at all with the operation of the furnace, but by means of the drum many of the heat units which are contained in the escaping products of combustion are made use of for heating air that may be delivered to some portion of the building.

The use of this improvement in connection with the ordinary hot air heater will increase the eiiiciency of the heater very considerably because in addition to the hot air which is delivered from the pipes 6,

there will be an additional current of hot air from the distributing pipe 11, which is heated from the products of combustion that usually go to waste.

I have herein shown the top of the firesot 2 as in'the form of drum 17 which is provided with a separate air inlet pipe18 and with a separate distributing pipe 19 through which the hot air is delivered. The inlet pipe 18 may receive fresh air from. any suitable location, and l have herein illus trated it as connected to he cold air box 8. With this aduition the heating apparatus will not only deliver the usual amount of air from the distributing pipes 5, but will also deli er an added amount hot air through the supplementary pi aes 19 and 11.

in. a house that is heated by a hot air ieater which has a plurality of distributing pipes leading from common air heating space, such as the space 7, it is frequently quite difiicult todeliver the heated air to certain of the rooms, especially those on the north si e of the building. As a result, in y houses one or more rooms are always cold in winter because of the inability to deliver the heated air thereto.

l l hile the heated air which is delivered through the distributing pipes 19 and 11 may be take to any part of the building, yet T will preferably so arrange these distributing pipes that said air will be delivered into the rooms which it is usually most diiiicult to heat.

Since each distributing pipe 19 and 11 is the sole outlet for a heating drum, it will be possible to deliver the air heated in said drum into any room and my improvement, therefore, when applied to a hot air heater provides not only for greatly increasing the ehiciency of the heater, but also provides for delivering the air where it is most needed.

The drum 17 forming the top of the fire 1.11;; longitudinally of the flue,'a flue passage extending; through said drum in line with its longer axis, a pipe communicating ith the bottom of the drum by which cold air is delivered to the drum, and another pipe communicating with the top of the drum by which the air heated therein is delivered from the drum.

ln a furnace, the combination with a fire pot, of a mushroom-shaped drum detachably secured to the top thereof, the bot tom of the drum being substantially flat and forming the top of the fire pot, an air casing; surrounding the fire pot, a plurality of hot air delivery flues connected to the casing and through which heated air is delivered, a separate delivery flue connected to said drum and through whichair is delivered, a smoke flue leading from the fire pot, said flue having an enlarged portion, an ellipsoidal drun situated within said flue with longer axis extending longitudinally of the flue, a flue passage extending through 2% said drum in line with its longer axis, a not an delivery pipe connnunicating with said drum, and a separate cold air supplyv pipe leading-to each drum.

In testimony whereof, I have signed my name to this specification.

FRANKLIN G. SAYLOR.

o the damper with its longer axis extend 

